CN103212740B - Keyless drill chuck axle bed - Google Patents
Keyless drill chuck axle bed Download PDFInfo
- Publication number
- CN103212740B CN103212740B CN201310136249.0A CN201310136249A CN103212740B CN 103212740 B CN103212740 B CN 103212740B CN 201310136249 A CN201310136249 A CN 201310136249A CN 103212740 B CN103212740 B CN 103212740B
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- China
- Prior art keywords
- pedestal
- axle bed
- drill chuck
- keyless drill
- thread segment
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Abstract
The invention belongs to field of mechanical technique, relate to keyless drill chuck, especially relate to a kind of keyless drill chuck axle bed.It solve prior art and design the technical problems such as not reasonable.Including pedestal and endoporus, this axle bed have axially through endoporus and pedestal cylindrically, it is characterised in that be provided with axle bed thread segment outside described pedestal, in the location division that is arranged over of axle bed thread segment, the external diameter of described location division is more than the external diameter of axle bed thread segment.The advantage of this keyless drill chuck axle bed is: reasonable in design, simple and compact for structure, it it is an important bearing parts having multiple use concurrently, combine with location division tight fit location plus threaded, guarantee that this keyless drill chuck is prone to bonding strength height after dismounting and assembling, the structure of keyless drill chuck be can effectively optimize, the structural strength of keyless drill chuck, job stability and operating accuracy improved.
Description
Technical field
The invention belongs to field of mechanical technique, relate to keyless drill chuck, especially relate to one
Plant keyless drill chuck axle bed.
Background technology
Along with the development of social productive forces, the use of drill chuck widely, at machine
Make, electronic apparatus, construction and installation, the bench drill used in the industry such as house decoration, hand
Electric drill or lathe etc. mechanically, all can need to clamp the work such as drill bit or cutter with drill chuck
Tool is operated.Existing drill chuck generally has two types: one is that Wrench-type bores
Chuck, the clamping force of this drill chuck depends on the moment that spanner applies, and in clamping and
Need aid during loose unloading drill bit, use aid to tighten or unclamp drill chuck and pacify
Fill or dismantle drill bit or cutter, operating cumbersome, waste time and energy；Another kind is self-tightening
Formula drill chuck.The self-tightening drill chuck principle by self-tightening, turning after utilizing drill bit to install
Dynamic, tighten drill bit or cutter automatically by screw thread, when the instrument such as drill bit or cutter of clamping
It is easy to.
Conventional keyless drill chuck generally includes main body, lock-screw, jaw, ball, end
Cover, jaw seat, end cap and ball lid.Ball cover cavity has a ring-shaped step, main body
Be a cylinder, periphery have an annular shaft shoulder, main body the annular shaft shoulder with
Being dispersed with a circle ball between the ring-shaped step of ball lid, main body is loaded on by ball lid and folder
In the pilot sleeve that pawl seat is stitched together, this pilot sleeve is by end shield and ball lid
Thread connection is stitched together.
Obviously, prior art design is not reasonable, it is difficult to formed and main body carries out stable
The main spindle box held, and structure is complicated, is prone to appearance and loosens after having assembled, serious shadow
Ring keyless drill chuck normally to work.
Summary of the invention
It is an object of the invention to for the problems referred to above, it is provided that a kind of reasonable in design, structure letter
Single compact, there is location structure and possess the keyless drill chuck axle bed of multiple use.
For reaching above-mentioned purpose, present invention employs following technical proposal: this self-tightening drill point
Head axle bed, is arranged between main body and integrated guide bearing, including pedestal and endoporus, and should
Axle bed have axially through endoporus and pedestal cylindrically, it is characterised in that described
Axle bed thread segment it is provided with, in the location division that is arranged over of axle bed thread segment, institute outside pedestal
The external diameter of the location division stated is more than the external diameter of axle bed thread segment.
The keyless drill chuck of the present invention is different, including main body, lock from conventional keyless drill chuck
Tight screw, integrated guide bearing, axle bed, jaw, some balls, end shield, elastic cover
Deng parts.Main body is cylindrical, has been threaded connection lock-screw in main body lower end,
Can move equipped with axial relative to lock-screw, circumferentially positioned and radial direction in lock-screw lower end
Three dynamic jaws.Main body is located in tubular integrated guide bearing, this integrated guide
The top of bearing is that cylindrical circular monoblock type holds the portion of leading, and bottom is the folder in taper barrel
Pawl rail portion.I.e. integrated guide bearing can be divided into two parts according to function, and one is jaw
Rail portion, i.e. integrated guide bearing bottom；One is that monoblock type holds the portion of leading, i.e. integrated guide
Bearing top；And jaw rail portion and monoblock type hold the portion of leading and be connected as a single entity.At jaw guide rail
Portion has some guide grooves, and jaw arranges with guide groove one_to_one corresponding and jaw is arranged on guide groove
In.Connection thread segment it is provided with, this connection thread segment and axle bed spiral shell in monoblock type holds the portion of leading
Line section is threaded.Connect thread segment be arranged over positioning step, this positioning step with
The forced positioning step being positioned at integrated guide bearing of location division tight fit, i.e. location division
On.Location division achieves axle bed rigidity location in keyless drill chuck.By screw thread even
Connect and guarantee that axle bed and integrated guide bearing become an entirety with tight fit.
In above-mentioned keyless drill chuck axle bed, the lower surface of described pedestal has ring-type
Arcuate groove.Annular cambered raceway is mainly used in the motion guide to keyless drill chuck ball.
In above-mentioned keyless drill chuck axle bed, described pedestal lower axial end forms thrust
The seat ring of rolling bearing.That is, pedestal lower axial end becomes thrust with ball and annular shaft shoulder
Rolling bearing.
In above-mentioned keyless drill chuck axle bed, described pedestal radially inner side is formed centripetal
The bearing shell of sliding bearing.More specifically, the trunnion of body top periphery and pedestal
Radially inner side contacts.Pedestal radially inner side constitutes radial plain bearing.
In above-mentioned keyless drill chuck axle bed, the upper surface of described pedestal is provided with at least
Two fabrication holes, described fabrication hole is distributed symmetrically and evenly at circumferencial direction.When pedestal is pacified
After being contained in keyless drill chuck, pedestal upper surface is the neatest with the upper surface in monoblock type guidance portion
Flat.
Compared with prior art, described axle bed is that this keyless drill chuck newly increases
Individual strength member, the advantage of this keyless drill chuck axle bed is: reasonable in design, structure letter
Single the compactest, be an important bearing parts having multiple use concurrently, add threaded with
Tight fit location, location division combines, it is ensured that after this keyless drill chuck is prone to dismounting and assembling
Bonding strength is high, it is possible to effectively optimize the structure of keyless drill chuck, improves keyless drill chuck
Structural strength, job stability and operating accuracy.
Accompanying drawing explanation
Fig. 1 is that the axle bed that the present invention provides structure of partly cuing open when being arranged on keyless drill chuck is shown
It is intended to.
Fig. 2 is that the axle bed that the present invention provides partly cuts open structural representation.
Fig. 3 is the axle bed plan structure schematic diagram that the present invention provides.
Fig. 4 is that the axle bed that the present invention provides looks up structural representation.
In figure, main body 1, annular the shaft shoulder 11, trunnion 12, integrated guide bearing 2,
Monoblock type guidance portion 21, connection thread segment 21a, positioning step 21b, jaw rail portion
22, ring-shaped step 23, pedestal 3, axle bed thread segment 31, location division 32, annular cambered
Raceway 33, fabrication hole 34, endoporus 35, lock-screw 4, jaw 5, ball 6, end
Cover 7, elastic cover 8.
Detailed description of the invention
As Figure 1-4, this keyless drill chuck axle bed is arranged on main body 1 and integrated guide
Between bearing 2, including pedestal 3, this pedestal 3 have axially through endoporus 35 and seat
Body 3 is cylindrically.Axle bed thread segment 31 it is provided with, at axle bed thread segment 31 outside pedestal 3
Be arranged over location division 32, the external diameter of described location division 32 be more than axle bed thread segment
The external diameter of 31.The keyless drill chuck of the present invention is different from conventional keyless drill chuck, including main
Body 1, lock-screw 4, integrated guide bearing 2, axle bed, jaw 5, some balls 6,
The parts such as end shield 7, elastic cover 8.Main body 1 is cylindrical, logical in main body 1 lower end
Crossing threaded has lock-screw 4, in lock-screw 4 lower end equipped with relative to locking screw
Follow closely 4 axial, circumferentially positioned and radially movable three jaws 5.Main body 1 be located in
In the integrated guide bearing 2 of tubular, the top of this integrated guide bearing 2 is cylindrical
Monoblock type hold the portion of leading 21, bottom is the jaw rail portion 22 in taper barrel.I.e. one
Formula guidance seat 2 can be divided into two parts according to function, and one is jaw rail portion 22, and i.e. one
Body formula guidance seat bottom；One is that monoblock type holds the portion of leading 21, i.e. integrated guide bearing top；
And jaw rail portion 22 and monoblock type hold the portion of leading 21 and be connected as a single entity.In jaw rail portion 22
Having some guide grooves, jaw 5 arranges with guide groove one_to_one corresponding and jaw 5 is arranged on and leads
In groove.Connection thread segment 21a, this connection thread segment it is provided with in monoblock type holds the portion of leading 21
21a is threadeded with axle bed thread segment 31.It is arranged over location connecting thread segment 21a
Step 21b, this positioning step 21b and location division 32 tight fit, i.e. location division 32 are pressed
Enter formula to be positioned on the positioning step 21b of integrated guide bearing 2.Location division 32 achieves
Axle bed rigidity location in keyless drill chuck.It is threaded connection and guarantees axle with tight fit
Seat and integrated guide bearing 2 become an entirety.
Main body 1 periphery is provided with the annular shaft shoulder 11, is provided with ring in integrated guide bearing 2
Shape step 23, the annular shaft shoulder 11 is arranged on ring-shaped step 23.The lower surface of pedestal 3
There is annular cambered raceway 33, set between annular cambered raceway 33 and the annular shaft shoulder 11
There are some balls 6.That is, pedestal 3 lower axial end is formed with ball 6 and the annular shaft shoulder 11
The seat ring of thrust bearing.
Pedestal 3 radially inner side forms the bearing shell of radial plain bearing.More specifically, main
The trunnion 12 of body 1 top periphery contacts with pedestal 3 radially inner side.Pedestal 3
Radially inner side constitutes radial plain bearing.
The upper surface of pedestal 3 is provided with at least two fabrication hole 34, and fabrication hole 34 is at circumference
Direction is distributed symmetrically and evenly.After pedestal 3 is arranged on keyless drill chuck, pedestal 3 upper end
Face flushes with the upper surface in monoblock type guidance portion 21 substantially.
Specific embodiment described herein is only to present invention spirit theory for example
Bright.Those skilled in the art can be to described specific embodiment
Make various amendment or supplement or use similar mode to substitute, but without departing from
The spirit of the present invention or surmount scope defined in appended claims.
Although the most more employing main body 1, the annular shaft shoulder 11, trunnion 12,
Body formula guidance seat 2, monoblock type guidance portion 21, connect thread segment 21a, positioning step 21b,
Jaw rail portion 22, ring-shaped step 23, pedestal 3, axle bed thread segment 31, location division
32, annular cambered raceway 33, fabrication hole 34, endoporus 35, lock-screw 4, jaw 5,
The terms such as ball 6, end shield 7, elastic cover 8, but be not precluded from using other term can
Can property.Use these terms to be only used to more easily to describe and explain the basis of the present invention
Matter；Being construed as any additional restriction is all to disagree with spirit of the present invention
's.
Claims (2)
1. a keyless drill chuck axle bed, is arranged on main body (1) and integrated guide bearing (2)
Between, including pedestal (3), this pedestal (3) have axially through endoporus (35) and
Pedestal (3) is cylindrically, it is characterised in that described pedestal (3) outside is provided with axle
Seat thread segment (31), is arranged over location division (32) at axle bed thread segment (31),
The external diameter of described location division (32) is more than the external diameter of axle bed thread segment (31) and fixed
The forced positioning step (21b) being positioned at integrated guide bearing (2) in position portion (32)
On；Described pedestal (3) lower axial end forms the seat ring of thrust bearing；Described
The lower surface of pedestal (3) has annular cambered raceway (33)；Described pedestal (3) footpath
The bearing shell of radial plain bearing is formed to inner side；The top of integrated guide bearing (2) be in
Columnar monoblock type holds the portion of leading (21), and bottom is the jaw rail portion in taper barrel
(22)；After pedestal (3) is arranged on keyless drill chuck, pedestal (3) upper surface is basic
Flush with the upper surface in monoblock type guidance portion (21).
Keyless drill chuck axle bed the most according to claim 1, it is characterised in that institute
The upper surface of the pedestal (3) stated is provided with at least two fabrication hole (34), described technique
Hole (34) is distributed symmetrically and evenly at circumferencial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310136249.0A CN103212740B (en) | 2013-04-18 | 2013-04-18 | Keyless drill chuck axle bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310136249.0A CN103212740B (en) | 2013-04-18 | 2013-04-18 | Keyless drill chuck axle bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103212740A CN103212740A (en) | 2013-07-24 |
| CN103212740B true CN103212740B (en) | 2016-08-31 |
Family
ID=48811075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310136249.0A Active CN103212740B (en) | 2013-04-18 | 2013-04-18 | Keyless drill chuck axle bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103212740B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212736B (en) * | 2013-04-18 | 2016-07-13 | 玉环胜友工具有限公司 | Composite bearing for keyless drill chuck |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195990Y (en) * | 1994-01-28 | 1995-05-03 | 游友民 | Gripping device for drilling machine |
| CN2683288Y (en) * | 2004-03-19 | 2005-03-09 | 游友民 | Self fastened drill chuck with improved structure |
| CN2832375Y (en) * | 2005-09-27 | 2006-11-01 | 浙江三鸥机械股份有限公司 | Locking self-screwed drill chuck |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2721288Y (en) * | 2004-08-04 | 2005-08-31 | 山东威达机械股份有限公司 | Hand-fastening self-locking drill chuck |
| WO2008009170A1 (en) * | 2006-07-11 | 2008-01-24 | Zhenqian Hu | Hand fastening drill chuck and bearing collar self-locking mechanism for the same |
| CN201067810Y (en) * | 2007-06-29 | 2008-06-04 | 游友民 | Elastic cover for drill chuck |
| CN203265721U (en) * | 2013-04-18 | 2013-11-06 | 玉环胜友工具有限公司 | Self-tight drill chuck shaft seat |
-
2013
- 2013-04-18 CN CN201310136249.0A patent/CN103212740B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195990Y (en) * | 1994-01-28 | 1995-05-03 | 游友民 | Gripping device for drilling machine |
| CN2683288Y (en) * | 2004-03-19 | 2005-03-09 | 游友民 | Self fastened drill chuck with improved structure |
| CN2832375Y (en) * | 2005-09-27 | 2006-11-01 | 浙江三鸥机械股份有限公司 | Locking self-screwed drill chuck |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103212740A (en) | 2013-07-24 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |